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Vishay General Semiconductor - Diodes Division SMCJ64CAHE3_A/I
- Part No.:
- SMCJ64CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64CAHE3_A/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,794
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Product details
Overview
SMCJ64CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features a 64 V standoff voltage (VWM), 103 V maximum clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed to safeguard MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning-induced surges in automotive and industrial systems.
For engineers reviewing the SMCJ64CAHE3_A/I datasheet, SMCJ64CAHE3_A/I pinout, SMCJ64CAHE3_A/I application, or SMCJ64CAHE3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (–55 °C to +150 °C), and compatibility with automated SMT placement on standard PCB pad layouts per JEDEC DO-214AB footprint.
Technical Context
This device operates as a voltage-clamped crowbar during transient overvoltage events, leveraging an avalanche breakdown mechanism across both polarities. Its glass-passivated junction ensures stable VBR (71.1–78.6 V) with low temperature coefficient (0.105 %/°C) and fast response time (<1 ns), enabling effective suppression of ESD, EFT, and surge pulses per IEC 61000-4-2/4-4/4-5.
The SMCJ64CAHE3_A/I is rated for 1500 W peak pulse power under standardized 10/1000 μs waveform, with derating above 25 °C per Fig. 2. Its unidirectional counterpart lacks bidirectional symmetry, while its AEC-Q101 qualification (via HE3 suffix) confirms suitability for automotive powertrain and body electronics where reliability under thermal cycling and mechanical stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe working margin below breakdown. |
| VBR min/max | 71.1 V / 78.6 V - Breakdown voltage range at 1 mA test current; ensures consistent avalanche turn-on across production lots. |
| VC @ IPPM | 103 V - Clamping voltage at 14.6 A peak pulse current; determines maximum voltage seen by protected circuit during worst-case surge. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; quantifies single-event surge energy absorption capability. |
| ID @ VWM | 1.0 μA - Reverse leakage at 64 V; negligible power loss and minimal impact on high-impedance signal lines. |
| TJ range | –55 °C to +150 °C - Operating junction temperature range; supports under-hood automotive and industrial ambient conditions. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; informs PCB thermal design requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical avalanche junction; conducts during negative transients to clamp voltage. |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical avalanche junction; conducts during positive transients to clamp voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both polarities - eliminates need for polarity-aware layout in AC-coupled or floating signal paths. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensors - meets stress testing for temperature cycling, humidity, and mechanical shock. |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (103 V / 71.1 V ≈ 1.45) - reduces let-through voltage during high-current surges compared to higher-Rsurge TVS devices. |
| MSL Level 1 rating | Compatible with standard reflow profiles up to 260 °C peak - supports high-yield automated assembly without moisture-related popcorning. |
| Glass passivated junction | Stable electrical parameters over lifetime and environmental stress - prevents parameter drift due to humidity or contamination ingress. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across power rail input prior to DC/DC converter. Use Value: Limits transient excursions to ≤103 V, preventing damage to downstream regulators and microcontrollers rated for 36 V absolute max. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground near connector interface. Use Value: Sub-1 nS response suppresses 4 kV ESD events without distorting 0–10 V analog signals or inducing measurable offset. |
| Telecom Interface Surge Protection | Consumer Device USB Port Protection |
Use Scenario: Guarding RS-485 transceivers in outdoor base station backhaul links exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Differential-mode TVS pair across A/B lines, referenced to local ground plane. Use Value: Withstands 1500 W surge energy per line while maintaining <1.0 μA leakage at 64 V - avoids false triggering in idle state. |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in smart home hubs against human-body-model ESD. IC Role / Device Role / Timing Role: Bidirectional TVS placed inline with data lines, upstream of USB PHY IC. Use Value: Clamps 8 kV contact discharge to <103 V within nanoseconds, preserving signal integrity and preventing PHY latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CAHE3_A/I | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VC specs. | Suitable for space-constrained consumer electronics but insufficient for 1500 W industrial surge standards. | Select when board area is limited and surge threat level is ≤600 W (e.g., IEC 61000-4-5 Level 3). |
| SMCJ64AHE3_A/I | Unidirectional version; identical VWM, VBR, VC, and PPPM, but asymmetric conduction (cathode-marked). | Required only where DC-biased rails demand polarity-specific clamping (e.g., 5 V logic supply with ground-referenced transients). | Choose only if system architecture mandates unidirectional behavior - otherwise SMCJ64CAHE3_A/I provides broader protection coverage. |
Compared with SMBJ64CAHE3_A/I, the SMCJ64CAHE3_A/I delivers 2.5× higher surge energy handling in a slightly larger footprint; versus SMCJ64AHE3_A/I, it adds full bidirectional symmetry without sacrificing clamping performance or thermal robustness - making it optimal for floating or AC-coupled interfaces.
Availability
SMCJ64CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, telecom RS-485 surge resilience, and consumer USB port safety requiring stable component supply across long-lifecycle programs.
Supply support for SMCJ64CAHE3_A/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered specifically for AEC-Q101 compliance, extended temperature operation, and robust surge immunity in automotive, industrial, and infrastructure applications.
FAQ
What does the "CA" suffix indicate in SMCJ64CAHE3_A/I?
The "CA" suffix denotes a bidirectional configuration: the SMCJ64CAHE3_A/I provides symmetrical transient voltage clamping in both polarities, unlike unidirectional variants (e.g., SMCJ64AHE3_A/I) that conduct only from cathode to anode. This enables use on AC-coupled lines, differential buses, or floating nodes without polarity concerns - a key distinction confirmed in Vishay's datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is SMCJ64CAHE3_A/I qualified for automotive applications?
Yes, the "HE3" suffix certifies AEC-Q101 qualification for SMCJ64CAHE3_A/I, as explicitly stated in the Vishay document under "MECHANICAL DATA" and "ORDERING INFORMATION". This qualification covers stress tests including temperature cycling, humidity, mechanical shock, and high-temperature operating life - validating its use in engine control, body electronics, and ADAS subsystems per automotive OEM requirements.
What is the maximum clamping voltage of SMCJ64CAHE3_A/I at rated surge current?
The SMCJ64CAHE3_A/I has a maximum clamping voltage (VC) of 103 V at its rated peak pulse current (IPPM) of 14.6 A, measured using the standard 10/1000 μs waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay datasheet (Document Number: 88394), ensuring predictable let-through voltage during surge events.
How does the thermal resistance of SMCJ64CAHE3_A/I affect PCB layout?
The SMCJ64CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, as defined in the "THERMAL CHARACTERISTICS" table. To maintain TJ ≤ 150 °C under sustained 6.5 W power dissipation, designers must allocate sufficient copper area and consider airflow - undersized pads will cause premature thermal derating of surge capability.
Can SMCJ64CAHE3_A/I replace SMCJ64AHE3_A/I in an existing design?
SMCJ64CAHE3_A/I can replace SMCJ64AHE3_A/I only if the circuit requires bidirectional clamping - for example, on differential or AC-coupled signal lines. However, it cannot be used as a drop-in replacement on DC-biased unidirectional rails where polarity marking and forward conduction matter, since SMCJ64CAHE3_A/I lacks cathode band marking and conducts identically in both directions. Layout review is mandatory before substitution.
SMCJ64CAHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ64CAHE3_A/I FAQ
1.How can I place an order for SMCJ64CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64CAHE3_A/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMCJ64CAHE3_A/I reliable?
The price and inventory of SMCJ64CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ64CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64CAHE3_A/I?
SMCJ64CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64CAHE3_A/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMCJ64CAHE3_A/I?
For technical support, including SMCJ64CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ64CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ64CAHE3_A/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMCJ64CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ64CAHE3_A/I?
All SMCJ64CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64CAHE3_A/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMCJ64CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ64CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64CAHE3_A/I Tags
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